The engine fits and the ND0 gearbox also fits, you cant mate a JC series to the big block 8xx series F4R without a bell housing mod.
problem is its not a great engine, turbos are rubbish and the pistons look bad quality, also the manifold is abismally designed the top drivers side engine mount fits but none of the others.
I was going to do the conversion i had the engine and a PK6 box ready but i couldnt justify the cost of fabricating mounts.
My plan was to fit the megane subframe into the clio - much the same as the new clio sport, then use the meganes twin radius suspension set up and clio drive shafts.
then fabricate an upper gearbox mount.
it would have all been controlled by a 700 series omex ecu.
when i added all the costs up and time i decided to use the money to buy a new house